5 seconds of 60 Hz mains hum (USA). Recorded in Adobe Audition from an Indigo I/O sound card by touching the tip of an audio input cord and wrapping the other hand around an insulated power cable. Normalized to -3 dB. No dithering. Saved with "0.8" quality VBR.

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5 seconds of 60 Hz mains hum. Recorded in Adobe Audition from an Indigo I/O sound card by touching the tip of an audio input cord and holding a power cable with the other hand. Normalized to -3 dB. No dithering. Saved with "0.8" quality VBR. Source:

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